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BOSTON MARATHON 2023

Nick Sia

Bib: 29867•M

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:17/mi
25:44
↑ 97↓ 3451.5%
10K· 6.21 mi
8:04/mi
50:48
↑ 79↓ 1380.4%
15K· 9.32 mi
8:06/mi
1:15:58
↑ 67↓ 78
20K· 12.43 mi
8:07/mi
1:41:11
↑ 106↓ 860.1%
Half· 13.11 mi
8:05/mi
1:46:42
↑ 19↓ 370.5%
25K· 15.53 mi
8:25/mi
2:07:07
↑ 66↓ 880.2%
30K· 18.64 mi
8:29/mi
2:33:27
↑ 181↓ 1480.2%
20M
8:42/mi
2:45:16
↑ 64↓ 500.2%
21M
9:15/mi
2:54:31
↑ 106↓ 241.6%
35K· 21.75 mi
8:07/mi
3:00:35
↑ 17↓ 861.7%
23M
8:21/mi
3:11:02
↑ 23↓ 630.6%
24M
8:09/mi
3:19:11
↓ 821.3%
40K· 24.85 mi
8:19/mi
3:26:18
↓ 200.3%
25.2M
9:05/mi
3:29:26
↑ 13↓ 160.2%
Finish· 26.22 mi
8:06/mi
3:37:41
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:42
Pace8:08 /mi
2nd Half
Distance13.11 mi
Time1:50:59
Pace8:28 /mi
📊Positive Split: 4.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:43:4525:448:1725:44
8:17
-
10K
6.21 mi12:08:4950:488:1125:04
8:04
-0:13
15K
9.32 mi12:33:591:15:588:0925:10
8:06
+0:02
20K
12.43 mi12:59:121:41:118:0925:13
8:07
+0:01
Half
13.11 mi13:04:431:46:428:085:31
8:05
-0:02
25K
15.53 mi13:25:082:07:078:1120:25
8:25
+0:20
30K
18.64 mi13:51:282:33:278:1426:20
8:29
+0:04
20M
20.00 mi14:03:172:45:168:1611:49
8:42
+0:13
21M
21.00 mi14:12:322:54:318:199:15
9:15
+0:33
35K
21.75 mi14:18:363:00:358:186:04
8:07
-1:08
23M
23.00 mi14:29:033:11:028:1810:27
8:21
+0:14
24M
24.00 mi14:37:123:19:118:188:09
8:09
-0:12
40K
24.85 mi14:44:193:26:188:187:07
8:19
+0:10
25.2M
25.20 mi14:47:273:29:268:193:08
9:05
+0:46
Finish
26.22 mi14:55:423:37:418:198:15
8:06
-0:59

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

8:04 /mi

Average Pace

8:19 /mi

Slowest Pace

9:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:25:18

94% of race

Time at Steady Pace

12:23

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:18 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:43:4525:448:1725:44
8:17
#16015
10K
6.21 mi12:08:4950:488:1125:04
8:04
#15646
15K
9.32 mi12:33:591:15:588:0925:10
8:06
#15487
20K
12.43 mi12:59:121:41:118:0925:13
8:07
#15183
Half
13.11 mi13:04:431:46:428:085:31
8:05
#15168
25K
15.53 mi13:25:082:07:078:1120:25
8:25
#15229
30K
18.64 mi13:51:282:33:278:1426:20
8:29
#15002
20M
20.00 mi14:03:172:45:168:1611:49
8:42
#14982
21M
21.00 mi14:12:322:54:318:199:15
9:15
#14954
35K
21.75 mi14:18:363:00:358:186:04
8:07
#14868
23M
23.00 mi14:29:033:11:028:1810:27
8:21
#14708
24M
24.00 mi14:37:123:19:118:188:09
8:09
#14570
40K
24.85 mi14:44:193:26:188:187:07
8:19
#14478
25.2M
25.20 mi14:47:273:29:268:193:08
9:05
#14448
Finish
26.22 mi14:55:423:37:418:198:15
8:06
#14362
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi16015107021070215153(Top 57%)10365(Top 68%)10365(Top 196%)
10K6.21 mi3.10 mi15646+36910565+13710565+13715288(Top 57%)10418(Top 69%)10418(Top 197%)
15K9.32 mi3.11 mi15487+15910497+6810497+6815153(Top 57%)10365(Top 68%)10365(Top 196%)
20K12.43 mi3.11 mi15183+30410364+13310364+13314315(Top 54%)10002(Top 66%)10002(Top 189%)
Half13.11 mi0.68 mi15168+1510363+110363+114984(Top 56%)10284(Top 68%)10284(Top 195%)
25K15.53 mi2.42 mi15229-6110352+1110352+1115696(Top 59%)10410(Top 69%)10410(Top 197%)
30K18.64 mi3.11 mi15002+22710235+11710235+11714144(Top 53%)9708(Top 64%)9708(Top 184%)
20M20.00 mi1.36 mi14982+2010205+3010205+3014810(Top 56%)9899(Top 65%)9899(Top 187%)
21M21.00 mi1.00 mi14954+2810171+3410171+3414699(Top 55%)9805(Top 65%)9805(Top 186%)
35K21.75 mi0.75 mi14868+8610119+5210119+5212833(Top 48%)8920(Top 59%)8920(Top 169%)
23M23.00 mi1.25 mi14708+16010032+8710032+8712211(Top 46%)8567(Top 56%)8567(Top 162%)
24M24.00 mi1.00 mi14570+1389960+729960+7212244(Top 46%)8517(Top 56%)8517(Top 161%)
40K24.85 mi0.85 mi14478+929895+659895+6512207(Top 46%)8417(Top 55%)8417(Top 159%)
25.2M25.20 mi0.35 mi14448+309876+199876+1912976(Top 49%)8756(Top 58%)8756(Top 166%)
Finish26.22 mi1.02 mi14362+869824+529824+5212731(Top 48%)8646(Top 57%)8646(Top 164%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 57%
×21story building
+97ft-345ft

Overall

15153

Males

10365

M18-39

10365

5K→10K

3.1 - 6.2 mi

Top 57%
×5story building
+79ft-138ft

Overall

15288

Males

10418

M18-39

10418

10K→15K

6.2 - 9.3 mi

Top 57%
×3story building
+67ft-78ft

Overall

15153

Males

10365

M18-39

10365

15K→20K

9.3 - 12.4 mi

Top 54%
×5story building
+106ft-86ft

Overall

14315

Males

10002

M18-39

10002

20K→Half

12.4 - 13.1 mi

Top 56%
×2story building
+19ft-37ft

Overall

14984

Males

10284

M18-39

10284

Half→25K

13.1 - 15.5 mi

Top 59%
×4story building
+66ft-88ft

Overall

15696

Males

10410

M18-39

10410

25K→30K

15.5 - 18.6 mi

Top 53%
×9story building
+181ft-148ft

Overall

14144

Males

9708

M18-39

9708

30K→20M

18.6 - 20.0 mi

Top 56%
×5story building
+64ft-50ft

Overall

14810

Males

9899

M18-39

9899

20M→21M

20.0 - 21.0 mi

Top 55%
×8story building
+106ft-24ft

Overall

14699

Males

9805

M18-39

9805

21M→35K

21.0 - 21.8 mi

Top 48%
×7story building
+17ft-86ft

Overall

12833

Males

8920

M18-39

8920

35K→23M

21.8 - 23.0 mi

Top 46%
×5story building
+23ft-63ft

Overall

12211

Males

8567

M18-39

8567

23M→24M

23.0 - 24.0 mi

Top 46%
×6story building
+12ft-82ft

Overall

12244

Males

8517

M18-39

8517

24M→40K

24.0 - 24.9 mi

Top 46%
×1story
+6ft-20ft

Overall

12207

Males

8417

M18-39

8417

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

12976

Males

8756

M18-39

8756

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×2story building
+22ft-21ft

Overall

12731

Males

8646

M18-39

8646

Passing Analysis

Category:
Athletes Passed
2490
Passed By
837
Net Change
+1653
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16015
5K → 10K521152+369#16015#15646
10K → 15K269110+159#15646#15487
15K → 20K35046+304#15487#15183
20K → Half4530+15#15183#15168
Half → 25K123184-61#15168#15229
25K → 30K29972+227#15229#15002
30K → 20M9171+20#15002#14982
20M → 21M10173+28#14982#14954
21M → 35K9812+86#14954#14868
35K → 23M18020+160#14868#14708
23M → 24M15315+138#14708#14570
24M → 40K11119+92#14570#14478
40K → 25.2M4111+30#14478#14448
25.2M → Finish10822+86#14448#14362
TOTALS2490837+1653
📊

Passing Visuals

Category:
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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing